CalTopo
CalTopo grew out of search and rescue mapping and is the tool many professionals reach for when planning terrain in detail. Slope angle shading, aspect shading, forest cover, historical imagery and snow depth layers can be stacked on one map, with avalanche forecast boundaries and danger ratings pulled from regional centres. Routes and markers are drawn on the desktop and synced to the phone app, offline map areas download by size, and printed map exports remain excellent for a paper backup.
The learning curve is real, and the interface prioritises capability over comfort. Free accounts get the basics, while multiple paid tiers unlock larger offline downloads, custom layers and team sharing. Best for people who plan seriously at the kitchen table; anyone wanting a curated list of tours will find it spartan.
Pros
- Slope angle and aspect shading
- Avalanche forecast zones on the map
- Layer stacking with historical imagery
- Excellent printed map exports
- Desktop planning synced to the phone
Cons
- Steep learning curve
- Utilitarian interface
- Best features behind paid tiers
- No curated tour library
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